JPH036850Y2 - - Google Patents
Info
- Publication number
- JPH036850Y2 JPH036850Y2 JP1984147384U JP14738484U JPH036850Y2 JP H036850 Y2 JPH036850 Y2 JP H036850Y2 JP 1984147384 U JP1984147384 U JP 1984147384U JP 14738484 U JP14738484 U JP 14738484U JP H036850 Y2 JPH036850 Y2 JP H036850Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- electric signal
- idle
- adjustment
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Description
【考案の詳細な説明】
［考案の技術分野］
この考案はフイードバツク制御式気化器のアイ
ドル調整装置に係り、特に排気成分計等の計器を
要することなく簡単にアイドル空燃比の調整を為
し得るフイードバツク制御式気化器のアイドル調
整装置に関する。[Detailed description of the invention] [Technical field of the invention] This invention relates to an idle adjustment device for a feedback control type carburetor, and can easily adjust the idle air-fuel ratio without requiring any instruments such as an exhaust component meter. The present invention relates to an idle adjustment device for a feedback control type carburetor.
［考案の技術的背景］
内燃機関においては、排気検知要素例えばO2
センサにより排ガス中の酸素濃度を検知し、この
検知信号を入力する制御部により空燃比を理論空
燃比域に制御して排気有害成分を低減させるフイ
ードバツク制御式気化器を設けたものがある。こ
のフイードバツク制御式気化器のアイドリング時
には、燃料はアイドルポートから吸出されるが、
機関回転数が低くしかも安定した回転が得られる
とともに排気有害成分の排出量が少くなる最適な
アイドル空燃比となるように、アイドリング調濃
ねじの調整により前記アイドルポートの開度量を
調整している。[Technical background of the invention] In internal combustion engines, exhaust sensing elements such as O 2
Some are equipped with a feedback control type carburetor that detects the oxygen concentration in the exhaust gas using a sensor, and controls the air-fuel ratio within the stoichiometric air-fuel ratio range using a control unit that inputs this detection signal to reduce harmful exhaust gas components. When this feedback-controlled carburetor is idling, fuel is sucked out from the idle port.
The opening amount of the idle port is adjusted by adjusting the idle adjustment screw so that the engine speed is low and stable, and the idle air-fuel ratio is optimal, which reduces the amount of harmful exhaust gas emissions. .
［考案が解決しようとする問題点］
ところが、従来のアイドル空燃比の調整は、排
気成分計等の計器を用い、その指示を確認しなが
らアイドリング調濃ねじで調整していた。例え
ば、ドエルアングル計をデユーテイソレノイドに
接続し、この指示を見ながらアイドリング調濃ね
じを調整し、アイドル空燃比を調整していた。ま
た、排ガス中のCO％が一定値になる様に、CO計
で数値を確認しながらアイドリング調濃ねじを調
整し、アイドル空燃比を調整していた。あるい
は、空燃比を検知する計器を使用し、検知値が一
定値になる様にアイドリング調濃ねじを調整し、
アイドル空燃比を調整していた。[Problems to be solved by the invention] However, in the past, the idle air-fuel ratio was adjusted using a meter such as an exhaust component meter, and while checking the instructions, the idle adjustment screw was used to adjust the idle air-fuel ratio. For example, a dwell angle meter was connected to the duty solenoid, and while checking the instructions, the idle adjustment screw was adjusted to adjust the idle air-fuel ratio. In addition, in order to keep the CO% in the exhaust gas at a constant value, the idle air-fuel ratio was adjusted by adjusting the idle adjustment screw while checking the value with a CO meter. Alternatively, use an instrument that detects the air-fuel ratio, and adjust the idle adjustment screw so that the detected value is a constant value.
I was adjusting the idle air/fuel ratio.
このように、様々な計器を使用し数値を確認し
つつアイドリング調濃ねじと調整するため、アイ
ドル空燃比の調整作業が面倒であつた。 In this way, adjusting the idle air-fuel ratio was troublesome because the idle adjustment screw was adjusted while checking the numerical values using various instruments.
［考案の目的］
そこでこの考案は、フイードバツク制御式気化
器の制御部により排気成分計等の計器を要するこ
となく簡単にアイドル空燃比の調整を為し得るフ
イードバツク制御式気化器のアイドル調整装置を
実現することを目的とする。[Purpose of the invention] Therefore, this invention provides an idle adjustment device for a feedback-controlled carburetor that can easily adjust the idle air-fuel ratio using the control unit of the feedback-controlled carburetor without requiring any instruments such as an exhaust component meter. The purpose is to realize this.
［問題点を解決するための手段］
この目的を達成するためにこの考案は、排気検
知要素の検知する排気検知信号を入力する制御部
により空燃比を目標値に収束させるべく制御する
フイードバツク制御式気化器を設け、この気化器
のアイドル空燃比を調整するアイドリング調濃ね
じを設け、このアイドリング調濃ねじの調整によ
るアイドル空燃比の調整値に応じ周期が変化して
所定周期で振動する所定電気信号を発生する信号
発生部を前記制御部に設け、目標値たるアイドル
空燃比に対応させて設定された設定周期で振動す
る基準電気信号に前記アイドリング調濃ねじの調
整によるアイドル空燃比の調整値に応じ周期が変
化して所定周期で振動する所定電気信号を一致さ
せるべく前記所定電気信号により所定周期で点滅
される調整ランプと前記基準電気信号により設定
周期で点滅される基準ランプとを有し前記基準電
気信号と前記所定電気信号とを比較して表示する
比較表示部を前記制御部に設けたことを特徴とす
る。[Means for solving the problem] In order to achieve this purpose, this invention uses a feedback control type that controls the air-fuel ratio to converge to a target value by a control unit that inputs an exhaust detection signal detected by an exhaust detection element. A carburetor is provided, and an idling adjustment screw is provided to adjust the idle air-fuel ratio of the carburetor, and a predetermined electric current whose period changes in accordance with the adjustment value of the idle air-fuel ratio by adjustment of the idling adjustment screw and vibrates at a predetermined period. A signal generating section that generates a signal is provided in the control section, and an adjustment value of the idle air-fuel ratio by adjusting the idle adjustment screw is applied to a reference electric signal that vibrates at a set cycle set corresponding to the idle air-fuel ratio that is the target value. and a reference lamp that is blinked at a predetermined period according to the reference electric signal, and an adjustment lamp that is blinked at a predetermined period according to the predetermined electric signal in order to match the predetermined electric signal whose cycle changes according to the predetermined period and vibrates at a predetermined period. The present invention is characterized in that the control section is provided with a comparison display section that compares and displays the reference electric signal and the predetermined electric signal.
［作用］
この考案によれば、目標値たるアイドル空燃比
に対応させて設定された設定周期で振動する基準
電気信号にアイドリング調濃ねじの調整によるア
イドル空燃比の調整に応じ周期が変化して所定周
期が振動する所定電気信号を一致させるように、
前記所定電気信号により所定周期で点滅される調
整ランプと前記基準電気信号により設定周期で点
滅される基準ランプとを有する比較表示部で確認
しながら基準ランプの点滅する周期に調整ランプ
の点滅する周期を一致させるようにアイドリング
調濃ねじを調整すれば、目標とするアイドル空燃
比に調整することができる。このため、調整用の
計器を必要としない。[Function] According to this invention, the cycle is changed according to the adjustment of the idle air-fuel ratio by adjusting the idle adjustment screw to the reference electric signal which vibrates at a set cycle set corresponding to the idle air-fuel ratio which is the target value. So that the predetermined period matches the predetermined electrical signal that vibrates,
The adjustment lamp blinks at a predetermined period based on the predetermined electric signal, and the reference lamp blinks at a predetermined period according to the reference electric signal.While checking on a comparison display section, the adjustment lamp blinks at a blinking period according to the blinking period of the reference lamp. By adjusting the idle adjustment screw to match the values, the idle air-fuel ratio can be adjusted to the target idle air-fuel ratio. Therefore, no adjustment instrument is required.
［実施例］
次にこの考案の実施例を図に基づいて詳細に説
明する。第１〜３図は、この考案の実施例を示す
ものである。第３図において、２は内燃機関、４
は吸気通路、６は気化器、８は絞り弁である。気
化器６は、エアクリーナ１０から取入れた空気に
燃料を混合し、所要空燃比の混合気を生成する。
混合気は、絞り弁８により供給量を制御され、内
燃機関２で燃焼する。内燃機関２から排出される
排ガスは、排気通路１２の途中に設けた有害成分
低減手段、例えば三元触煤１４により有害成分た
るCO，HC，NOx等を酸化・還元して低減した
後、外部に排出される。[Example] Next, an example of this invention will be described in detail based on the drawings. 1 to 3 show examples of this invention. In Fig. 3, 2 is an internal combustion engine, 4 is an internal combustion engine,
is an intake passage, 6 is a carburetor, and 8 is a throttle valve. The carburetor 6 mixes fuel with the air taken in from the air cleaner 10 to generate an air-fuel mixture with a desired air-fuel ratio.
The supply amount of the air-fuel mixture is controlled by the throttle valve 8, and the mixture is combusted by the internal combustion engine 2. Exhaust gas discharged from the internal combustion engine 2 is discharged to the outside after oxidizing and reducing harmful components such as CO, HC, and NOx using a harmful component reducing means installed in the middle of the exhaust passage 12, such as a three-way soot 14. is discharged.
この三元触媒１４とともに有害成分を有効に低
減させるために、混合気を理論空燃比域に制御す
る。即ち、気化器６は、排気通路１２に設けた排
気検知要素たるO2センサ１６により酸素濃度を
検知し、この検知信号を入力する制御部１８によ
り燃料通路あるいは空気通路（図示せず）を開閉
する制御弁２０を動作制御して理論空燃比域にフ
イードバツク制御される。 In order to effectively reduce harmful components together with the three-way catalyst 14, the air-fuel mixture is controlled within the stoichiometric air-fuel ratio range. That is, the carburetor 6 detects the oxygen concentration with an O 2 sensor 16, which is an exhaust detection element provided in the exhaust passage 12, and opens and closes a fuel passage or an air passage (not shown) by a control unit 18 that inputs this detection signal. The operation of the control valve 20 is controlled to provide feedback control to the stoichiometric air-fuel ratio range.
このように、O2センサ１６の検知信号を入力
する制御部１８により理論空燃比域に制御するフ
イードバツク制御式の気化器６のアイドル空燃比
の調整は、アイドリング調濃ねじ２２により調整
される。第１図に示す如く前記気化器６の空燃比
をフイードバツク制御する制御部１８には、O2
センサ１６で検知した空燃比から、アイドリング
調濃ねじ２２の調整に応じ所定電気信号を発生す
る信号発生部２４を設ける。この所定電気信号
は、アイドリング調濃ねじ２２の調整によるアイ
ドル空燃比の調整値に応じ周期が変化して所定周
期で振動するものである。即ち、所定電気信号
は、第２図に示す如くアイドル空燃比の調整値に
比例して周期が変化する振動波などである。もち
ろん、電圧、電流値を変化させてもよい。調整さ
れるべき目標たるアイドル空燃比の調整値をｎ％
とすると、これに対応させて設定される基準電気
信号は、図示の如く周期ｔに設定される。これら
電気信号は、制御部１８に設けた比較表示部２６
で比較し表示される。比較表示部２６は、基準ラ
ンプ２８と調整ランプ３０とを設けている。前記
比較表示部２６は、前記基準ランプ２８を前記基
準電気信号の周期ｔで点滅させるとともに、前記
調整ランプ３０をアイドリング調濃ねじの調整に
よるアイドル空燃比の調整値に応じて変化した前
記所定電気信号の周期、例えばｔ＋１で点滅させ
る。 In this way, the idle air-fuel ratio of the feedback-controlled carburetor 6, which is controlled to the stoichiometric air-fuel ratio range by the control unit 18 which receives the detection signal from the O 2 sensor 16, is adjusted by the idle adjustment screw 22. As shown in FIG. 1, a control section 18 for feedback controlling the air-fuel ratio of the carburetor 6 includes
A signal generator 24 is provided which generates a predetermined electrical signal based on the air-fuel ratio detected by the sensor 16 in accordance with the adjustment of the idling adjustment screw 22. This predetermined electric signal oscillates at a predetermined period, the period of which changes according to the adjustment value of the idle air-fuel ratio by adjustment of the idling adjustment screw 22. That is, the predetermined electric signal is a vibration wave whose period changes in proportion to the adjusted value of the idle air-fuel ratio, as shown in FIG. Of course, the voltage and current values may be changed. The adjustment value of the target idle air-fuel ratio to be adjusted is n%.
Then, the reference electric signal set correspondingly to this is set to a period t as shown in the figure. These electrical signals are transmitted to a comparison display section 26 provided in the control section 18.
will be compared and displayed. The comparison display section 26 is provided with a reference lamp 28 and an adjustment lamp 30. The comparison display unit 26 causes the reference lamp 28 to blink at the period t of the reference electric signal, and causes the adjustment lamp 30 to display the predetermined electric power that has been changed in accordance with the adjustment value of the idle air-fuel ratio by adjusting the idle adjustment screw. The signal is blinked at the cycle of the signal, for example, t+1.
これにより、アイドリング調濃ねじ２２を調整
すると、調整ランプ３０の点滅周期はアイドリン
グ調濃ねじ２２の調整によるアイドル空燃比の調
整値に応じ変化するので、基準ランプ２８の点滅
する周期ｔに調整ランプ３０の点滅する周期ｔ＋
１が一致するようにアイドリング調濃ねじ２２を
調整することにより、目標とするアイドル空燃比
に調整することができる。このため、この調整装
置によれば計器を要することなく、簡単にアイド
ル空燃比の調整をすることができる。 As a result, when the idling adjustment screw 22 is adjusted, the blinking cycle of the adjustment lamp 30 changes according to the adjusted value of the idle air-fuel ratio by adjusting the idling adjustment screw 22, so that the adjustment lamp 30 will match the blinking period t of the reference lamp 28. 30 blinking periods t+
By adjusting the idling adjustment screw 22 so that 1 is the same, it is possible to adjust the idling air-fuel ratio to the target idling air-fuel ratio. Therefore, according to this adjustment device, the idle air-fuel ratio can be easily adjusted without requiring a meter.
［考案の効果］
このようにこの考案によれば、フイードバツク
制御式気化器の制御部に設けた信号発生部と比較
表示部とにより、基準電気信号に所定電気信号を
一致させるように比較表示部の調整ランプと基準
ランプとで確認しながらアイドリング調濃ねじを
調整することにより、目標とするアイドル空燃比
に調整することができる。このため、従来の如く
計器により数値を確認しつつ調整する作業を要せ
ず、単に表示された信号の一致を確認するだけで
あるので、簡単にアイドル空燃比の調整をするこ
とができ、計器を要することもない。[Effect of the invention] As described above, according to this invention, the signal generation section and the comparison display section provided in the control section of the feedback control type vaporizer cause the comparison display section to match the reference electrical signal with the predetermined electrical signal. By adjusting the idle adjustment screw while checking the adjustment lamp and the reference lamp, the idle air-fuel ratio can be adjusted to the target idle air-fuel ratio. Therefore, the idle air-fuel ratio can be adjusted easily, without the need to check and adjust the numerical values using a meter, and simply check that the displayed signals match. There is no need to.
第１〜３図はこの考案の実施例を示し、第１図
は制御部の回路説明図、第２図は調整値と周期と
のグラフ図、第３図はフイードバツク制御式気化
器の概略説明図である。
図において、２は内燃機関、６は気化器、１６
はO2センサ、１８は制御部、２２はアイドリン
グ調濃ねじ、２４は信号発生部、２６は比較表示
部、２８は基準ランプ、３０は調整ランプであ
る。
Figures 1 to 3 show examples of this invention, Figure 1 is a circuit diagram of the control section, Figure 2 is a graph of adjustment values and cycles, and Figure 3 is a schematic explanation of a feedback control type carburetor. It is a diagram. In the figure, 2 is an internal combustion engine, 6 is a carburetor, 16
18 is an O 2 sensor, 18 is a control unit, 22 is an idling adjustment screw, 24 is a signal generator, 26 is a comparison display unit, 28 is a reference lamp, and 30 is an adjustment lamp.
Claims (1)
る制御部により空燃比を目標値に収束させるべく
制御するフイードバツク制御式気化器を設け、こ
の気化器のアイドル空燃比を調整するアイドリン
グ調濃ねじを設け、このアイドリング調濃ねじの
調整によるアイドル空燃比の調整値に応じ周期が
変化して所定周期で振動する所定電気信号を発生
する信号発生部を前記制御部に設け、目標値たる
アイドル空燃比に対応させて設定された設定周期
で振動する基準電気信号に前記アイドリング調濃
ねじの調整によるアイドル空燃比の調整値に応じ
周期が変化して所定周期で振動する所定電気信号
を一致させるべく前記所定電気信号により所定周
期で点滅される調整ランプと前記基準電気信号に
より設定周期で点滅される基準ランプとを有し前
記基準電気信号と前記所定電気信号とを比較して
表示する比較表示部を前記制御部に設けたことを
特徴とするフイードバツク制御式気化器のアイド
ル調整装置。 A feedback control type carburetor is provided to control the air-fuel ratio to converge to a target value by a control unit inputting an exhaust detection signal detected by the exhaust detection element, and an idling adjustment screw is provided to adjust the idle air-fuel ratio of the carburetor. The control section is provided with a signal generating section that generates a predetermined electric signal that vibrates at a predetermined period and whose cycle changes according to the adjusted value of the idle air-fuel ratio by adjusting the idle air-fuel ratio by adjusting the idle air-fuel ratio, which is the target value. The predetermined electric signal vibrates at a predetermined period, the period of which changes according to the adjustment value of the idle air-fuel ratio by adjustment of the idle adjustment screw, to match the reference electric signal which vibrates at a predetermined period set in correspondence with the predetermined electric signal. The comparison display section comprises an adjustment lamp that is blinked at a predetermined cycle by an electric signal and a reference lamp that is blinked at a set cycle by the reference electric signal, and compares and displays the reference electric signal and the predetermined electric signal. An idle adjustment device for a feedback control type carburetor, characterized in that it is provided in a control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984147384U JPH036850Y2 (en) | 1984-09-29 | 1984-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984147384U JPH036850Y2 (en) | 1984-09-29 | 1984-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6163458U JPS6163458U (en) | 1986-04-30 |
| JPH036850Y2 true JPH036850Y2 (en) | 1991-02-20 |
Family
ID=30705610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984147384U Expired JPH036850Y2 (en) | 1984-09-29 | 1984-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH036850Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200484514Y1 (en) * | 2016-07-28 | 2017-09-13 | 이성진 | Auto pop-up drainpipe connecting device of washstand |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503453A (en) * | 1973-05-16 | 1975-01-14 | ||
| JPS5543272A (en) * | 1978-09-22 | 1980-03-27 | Fuji Heavy Ind Ltd | Automatic exhaust controller of internal combustion engine |
-
1984
- 1984-09-29 JP JP1984147384U patent/JPH036850Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200484514Y1 (en) * | 2016-07-28 | 2017-09-13 | 이성진 | Auto pop-up drainpipe connecting device of washstand |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6163458U (en) | 1986-04-30 |
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